DICE has included an Easter Egg in their Battlefield 4: Final Stand DLC which allows users to complete an assignment called “Phantom Operative” and unlock the Phantom Bow.
To unlock the assignment, you’ll need to do a few steps outside of the game itself. Here are the steps needed to unlock the assignment and the requirements needed to complete it.
You’ll first need to complete the previous three tasks in the “Phantom Program”. Don’t worry about completing the in game portion, just the steps within the “program” window.
Step 4: Now you are ready for Phantom Operative
First off, go to the Leaderboards on your Battlelog and note the tiny phantom icon near the bottom left of the page.
Click it and wait for the “PHANTOM PROGRAM” to initialize.
Once the “program” is up and running, it will end with, “physical access restriction in place”.
Step 5: You must now find the Phantom Room located at the A Flag on Hanger 21. The room can be accessed, in game, via an elevator (instructions in the video below).
Step 6: If you manage to survive the ride, you will find a panel on the right wall where you can enter a code.
Enter code 1290 429 397648 970 and grab the bow in the center of the room. Congratulations!
Phantom Bow Stats care of symthic.com:
General Max Damage = 100 Min Damage = 88 Bullet Dropoff Start = 35 Bullet Dropoff End = 100 Rate of Fire = 350 Rate of Fire Burst = 350 Muzzle Velocity = 75 Bullet Drop = 35 Mag Size = 1 Number of Mags = 20 Projectile = Spyder Reload Reload Left = 2.0 Reload Empty = 1.0 Reload Threshold = 1 Recoil Recoil Top = 1 Recoil Left = 0 Recoil Right = 0 Recoil Decrease = 15 Spread Spread Increase = 0 Spread Decrease = 0 Ads Not Moving = 0 Ads Moving = 0 Hip, Standing, Not Moving = 5 Hip, Standing, Moving = 6 Hip, Crouching, Not Moving = 4 Hip, Crouching, Moving = 5 Hip, Prone, Not Moving = 3 Hip, Prone, Moving = 4